Limnological properties of thermokarst lakes in Central Yakutia sampled between 2018-2019 ...

• Main Authors: Hughes-Allen, Lara, Bouchard, Frédéric, Séjourné, Antoine, Gandois, Laure
• Format: Dataset
• Language: English
• Published: PANGAEA 2020
• Subjects: Central Yakutia; Dissolved Organic Carbon; dissolved oxygen; limnology; Permafrost; pH; Temperature; thermokarst lakes; Season; Year of observation; Lake; Lake type; LATITUDE; LONGITUDE; Conductivity, specific; Temperature, water; Oxygen, dissolved; Carbon, organic, dissolved; Sampling lake; YSI Pro DSS multiprobe sensor; TOC-5000A analyzer, Shimadzu, Japan; permafrost; Thermokarst; Yakutia; Siberia
• Online Access: https://dx.doi.org/10.1594/pangaea.919907; https://doi.pangaea.de/10.1594/PANGAEA.919907

This dataset compiles selected limnological properties of a series of thermokarst (thaw) lakes in Central Yakutia (Eastern Siberia). These properties were measured during fall 2018 (September), winter 2019 (March-April), spring 2019 (May), and summer 2019 (August). These data span four seasons (Fall, Winter, Spring, and Summer) 2018-2019. The lake type designation is based on field observations, past radiocarbon dating of lake sediments, geochemical signatures of lake waters, and a multiple-stage development model of thermokarst lakes. Data were collected at the surface (~ 30 cm depth) from lake shores. Specific conductivity (accuracy ±1% of reading), temperature (accuracy ±0.2°C), dissolved oxygen (accuracy ±1% of reading or 1% saturation) and pH (accuracy ±0.2) were measured using a YSI Pro DSS multiprobe sensor. Water samples were collected to analyze dissolved organic carbon (DOC). Samples were filtered using baked glass fiber filters (Whatman GF/F, 0. 7µm), acidified to pH 2 with ultra-pure HCl and ...